Despite having already agreed to pay the U.S. Securities and Exchange Commission (SEC) $920 million in fines directly relating to the scandal, J.P. Morgan’s employees are now facing additional questioning and potential civil action from federal regulators.

While regulatory bodies can see what banks like J.P. Morgan Chase, Goldman Sachs Group and Morgan Stanley are trading in the markets, it’s considerably more difficult to assess what they own in the way of physical assets and properties.